Muffler.



No. 823,115. PATENTED JUNE 12, i906.

B. A. GRAMM.

MUFFLER.

APPLICATION FILED DEG.8.190:3.

19i P140030.) Q/ 51 we x 1 You 69 GYJWW gmwvw A 33711 C H'ozucu I outlet-compartment; each of said compartments colnprisim an end piece and a series of concentric cylindrical shells one end of each of which is mounted. in one of said end pieces and the other end of each of which is mount-' ed in a partition which separates said compartments from each other; the outer shell of each compartment being imperforate and the other shells thereof being perforated; and said partition being formed with apertures extending entirely around its outer edge be- I 5 tween the walls of theputer and the next to outer shells.

BENJAMIN A; GRAMM.

Witnesses H. T. HERMANN, W. H. SCHILDER. 

